Professional painters have done this before. It’s how they make their living. Through experience, they have learned tricks of the trade and the techniques used to get quality results. They are familiar with the type of paint to use in each situation, know what quality paint is right for each task and know how to achieve a perfectly straight edge – with or without the use of painter’s tape.
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Homer spent two years (1881–1882) in the English coastal village of Cullercoats, Tyne and Wear. Many of the paintings at Cullercoats took as their subjects working men and women and their daily heroism, imbued with a solidity and sobriety which was new to Homer's art, presaging the direction of his future work.[8] He wrote, "The women are the working bees. Stout hardy creatures."[27] His works from this period are almost exclusively watercolors.[28] His palette became constrained and sober; his paintings larger, more ambitious, and more deliberately conceived and executed. His subjects more universal and less nationalistic, more heroic by virtue of his unsentimental rendering. Although he moved away from the spontaneity and bright innocence of the American paintings of the 1860s and 1870s, Homer found a new style and vision which carried his talent into new realms.[29]

Nothing is more frustrating that not being on the same page as your professional. During your in-home meeting, clarify your expectations of the job and have the painter set appropriate expectations on his or her end as well. If you want the painter to show up at an exact time every day, or if you need them to leave at a certain time, see how your schedule might impact the completion time. Additionally, ask the painter about their expectations for the job like requiring a staging area for supplies, needing to use the driveway, or having access to running water. Don't forget to ask about the clean up and disposal expectations and find out if they need access to your garbage receptacle or if they plan on leaving extra paint with you.
When coverage is difficult to estimate, add more rather than less. You can always pour the leftover back into cans. For large jobs, use the bucket and a roller screen rather than a roller tray. It’s much faster to load your roller with the screen than to use a roller pan. Simply dunk the roller into the paint bucket, then roll it along the screen until it stops dripping.
The right paint stroke to use in interior painting is highly debatable. It's not a talent as much as a skill that is learned through practice. Many experts paint in a “W” pattern when using foam rollers, but others simply roll up and down then sideways with either brushes or rollers. The motion isn’t as important as making sure that the application is even and drip-free across the entire area. However, technique is important when you're covering over wall repairs.

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